Asked Dr. Phil !!! like VB said nothing is wrong with you. Sometimes everyone go thru those sad and depressed days and it might take a whole week before you starts to feel back. You have a much better life than millions of men so just appriciate the life and deal with it one day at a time. You might be missing home. when I miss home so much I go thru those depressed days and I get better after a while. So make some phone calls to loved ones and if you have enough time and of course money go visit family back in nepal if you have any family there. Just suggestion from my experiance. It might help !!!